https://kisskh.at/10619-incomplete-life
In Misaeng, ep 14, they don`t only speak German on the phone, but also train how to pronounce "W" in German. "Instead of pulling the sound to your nose and mouth like the English V, as if you are retching when you put your toothbrush deep inside your mouth, you have to rill the W, like Wasser". "Vase, Wagen Weiß, Wurst" 😂